textproduct: Quad Cities

KEY MESSAGES

- Passing high pressure moves through the area for a dry cooler day today, but then moves off to the east allowing for some showers across Iowa on Saturday.

- The well advertised more amplified and active pattern still on track to develop Sunday and especially next week, producing several chances for showers and thunderstorms and warm temperatures.

SHORT TERM /THROUGH TONIGHT/

Issued at 315 AM CDT Fri Apr 10 2026

Today...Overnight showers will continue to move out as high pressure drops down the MO RVR Valley and acrs IA. The initial cloud deck will slide south and east as the day progresses, but in the post deck clearing more ambient CU may form this afternoon and much of the day may be mostly cloudy. High temps generally in the mid 50s to around 60 south.

Tonight...The progressive ridge center will look to migrate eastward into the heart of the GRT LKS by Sat morning, allowing return flow (especially aloft) to build acrs IA. Thus after a mainly clear evening, mid and high clouds will be on the increase overnight and even a low chance for some high based showers to develop in the far southwest and west toward morning. Some dry air to overcome and a lot of the precip may remain aloft as virga. Cool low temps overnight with mid 30s in the far north, to lower 40s south where clouds arrive first.

LONG TERM /SATURDAY THROUGH THURSDAY/

Issued at 315 AM CDT Fri Apr 10 2026

Saturday...The warm air advection(WAA) regime will continue with clouds and building inversions just aloft. This may trap cooler temps at the sfc in the 50s to low 60s. Also there will be the chance for WAA induced sctrd elevated showers with higher coverage acrs IA then growing in LLJ convergent zones acrs northern IA into southern WI by evening. Enough elevated instability and mid layer lapse rates to even allow for a few thunderstorms especially acrs central into northeastern IA. Amplifying upper ridging later Saturday and Saturday night will shunt this process acrs eastern MN and especially the north half of WI where some heavy rainfall may occur into Sunday morning. Increasing southerly return flow at the sfc will keep temps up Sat night in the 50s.

Sunday...A breezy warm sector day with sctrd showers and thunderstorms developing again especially in the afternoon and into Sunday evening. If they can get sfc rooted, there may be a chance for a few storms to produce gusty winds. If the BL WAA can boost temps into the low to mid 70s with sfc DPTs in the low 60s, enough sfc based CAPE there for the wind cause. Showers and storms will fester into Sunday night, with localized swaths of rainfall ranging from 0.25 to 0.75 by Monday morning.

Monday through Thursday...An active week looks to be on tap if the mass field ideas of the latest ensembles verify with southwest CONUS upper troffing and resultant arching southwesterly steering flow aimed right up acrs the central to upper MS RVR Valley. There will be a chance for storms on Monday, but the latest ensembles suggest upper ridging to amplify right acrs the CWA with LLVL cyclogenesis more toward the northern plains and west-to-east oriented sfc boundary laying out more to the north acrs MN into WI and this is where the Monday night MCS action zone may occur. Will have to assess further model runs and trends of course, and developing severe risk areas as well as heavy rainfall zones. Some of the same trends occur on Tuesday as Monday, but maybe a bit further south placing portions of the local area in a severe weather risk. As a large portion of the upstream trof tries to lift out, there looks to be an almost daily threat of storms and heavy rainfall Wednesday through the end of the week. Some bouts of warm days in this stretch as well, with 80s looking likley for the breezy warm days of Monday and Tuesday, with solid 70s for much of the rest of the week.

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 555 AM CDT Fri Apr 10 2026

Lingering patches of light rain, fog and drizzle will move through the MLI TAF site through 13z or so, and drizzle/fog at BRL through 14z with LIFR CIGs. Then incoming high pressure behind a departing cool front will continue varying bouts of VFR to IFR CIGs through midday, before the CIGs get scooped upward back to higher MVFR and eventually VFR this afternoon. Winds will continue to settle on a north to or north-northwest direction as this morning progresses as well, ranging from 10-15 KTs. Mainly VFR tonight at all sites, with mid to high clouds increasing late from south to north.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.